Off the Gaza coast, a Hamas mbr. in a booby-trapped raft attempts to ram an Israeli naval patrol boat, but soldiers fire on the raft, causing it to explode, killing the Hamas mbr., causing no damage. Nr. Hebron 2 Hamas gunmen attack a lone trailer marking an illegal hilltop outpost, occupied by a single Jewish settler family; 1 Palestinian, 1 Jewish settler (a prominent mbr. of the outlawed Kach movement) die in an exchange of gunfire, 3 settlers are wounded, the other Palestinian escapes. Soon after Jewish settlers attack, vandalize Palestinian homes in Hebron. The IDF erects a sand barrier around the al-Sayafa area in the n. of the Gaza Strip, closing it off fr. its surroundings; bulldozes 1,500 m2 of land, a main road in al-Qarara; conducts arrest raids in Tulkarm; erects a new checkpoint e. of Dayr al Balah. Some 3,500 Palestinians attend a Hamas-led rally in Gaza City protesting U.S. plans to attack Iraq. The IDF says that it is concerned over the increase in weapons thefts fr. IDF bases during 2002; claims Jewish underworld figures, Israeli Arabs, Palestinians involved. The IDF reports that its undercover units have been rounding up 20 + n30 Palestinians/night in raids around the West Bank since 1/14. (HA 1/17; HA, NYT 1/18; NYT, WP, WT 1/20; LAW, PCHR 1/22)